Fix syntax error
diff --git a/xos/synchronizers/onos/steps/sync_onosapp.py b/xos/synchronizers/onos/steps/sync_onosapp.py
index 0ea9643..f460c2b 100644
--- a/xos/synchronizers/onos/steps/sync_onosapp.py
+++ b/xos/synchronizers/onos/steps/sync_onosapp.py
@@ -253,7 +253,7 @@
             access_devices = []
             for access in voltdev.access_devices.all():
                 access_device = {
-                    "uplink" : access.uplink
+                    "uplink" : access.uplink,
                     "vlan" : access.vlan
                 }
                 access_devices.append(access_device)